Terrible Zodin

The Terrible Zodin was encountered by and reminisced about by the Doctor on a number of occasions. He first met her some time prior to or during his second incarnation. Iris Wildthyme also claimed to have met her.

Zodin was involved in an adventure in which the Doctor interacted with multiple incarnations of himself. After this she erased their memories of the incident using "mind rubbers", preventing the later Doctors involved from remembering having experienced the events before. (PROSE: Cold Fusion)

The Third Doctor disputed that ever took place, (PROSE: Verdigris) although he conceded that accounts of his own conflict with Zodin might not be entirely accurate when confronted with the implausibility of her motives and of grasshoppers jumping eighteen-storey buildings. (PROSE: Legacy)

The first reference to the Terrible Zodin occurs in a scene in The Five Doctors when the Second Doctor mentions her to the Brigadier. Because several variant cuts of The Five Doctors exist and because Patrick Troughton apparently elaborated on the script, the amount of details on her and the details themselves vary from version to version.

The Terrible Zodin has become something of a running joke in Doctor Who. She is always discussed, but so far has never actually appeared on screen, in an audio or in print - other than a profile and sketch in The Dangerous Book of Monsters, by Justin Richards.

The Doctor and Martha Jones at some point met the Terrible Zodin (Martha Jones Blog July 1)